'La Bella Principessa,' late 15th century by Leonardo da Vinci
Christie’s auction house may have sold a priceless piece of art by Leonardo da Vinci for a little more than $21,000, according to researchers who claim to have identified the origins of the hotly debated painting.
The painting appears to have come from a 500-year-old book containing the family history of the Duke of Milan. Art historian Martin Kemp, of the University of Oxford, believes the mystery painting, which appeared in 1998, is a portrait of the duke’s daughter, created by da Vinci for her wedding book. 
READ: Lost da Vinci: Priceless da Vinci portrait sold for $21,000
See images of the portrait and book from livescience.com.
Other items you can purchase for $21,000. 

'La Bella Principessa,' late 15th century by Leonardo da Vinci

Christie’s auction house may have sold a priceless piece of art by Leonardo da Vinci for a little more than $21,000, according to researchers who claim to have identified the origins of the hotly debated painting.

The painting appears to have come from a 500-year-old book containing the family history of the Duke of Milan. Art historian Martin Kemp, of the University of Oxford, believes the mystery painting, which appeared in 1998, is a portrait of the duke’s daughter, created by da Vinci for her wedding book.

READ: Lost da Vinci: Priceless da Vinci portrait sold for $21,000

See images of the portrait and book from livescience.com.

Other items you can purchase for $21,000